( < plesiochronous digital hierarchy,
"plesiokroonne digitaalhierarhia")

olemus
ISO/IEC 14165-243:
bitipõhised multipleksimis- ja transpordiprotokollid sides,
näiteks DS-3, E3
= bit-oriented telecommunications multiplexing and transport protocols (e.g., DS-3, E3)

ülevaateid
https://www.techopedia.com/definition/21314/plesiochronous-digital-hierarchy-pdh

https://www.fctele.com/news/pdh-vs-sdh-understanding-the-differences-and-similarities/

https://www.electronicsforu.com/electronics-projects/electronics-design-guides/introduction-plesiochronous-digital-hierarchy

http://eti2506.elimu.net/Slides/Week%207/Plesiochronous%20Digital%20Hierarchy.pdf

https://en.wikipedia.org/wiki/Plesiochronous_digital_hierarchy

https://www.technologyuk.net/telecommunications/communication-technologies/plesiochronous-digital-hierarchy.shtml

https://arxiv.org/pdf/1407.6112.pdf